Читать книгу Essays Upon Heredity and Kindred Biological Problems - Weismann August - Страница 2

THE DURATION OF LIFE.

PREFACE.

I. THE DURATION OF LIFE.

APPENDIX.

ON HEREDITY.

PREFACE.

II. ON HEREDITY.

LIFE AND DEATH.

PREFACE.

III. LIFE AND DEATH.

CONTINUITY OF THE GERM-PLASM, &c.

PREFACE.

CONTINUITY OF THE GERM-PLASM, &c.

CONTENTS.

IV. THE CONTINUITY OF THE GERM-PLASM AS THE FOUNDATION OF A THEORY OF HEREDITY.

Introduction.

I. The Germ-plasm.

II. The Significance of the Polar Bodies.

III. On the Nature of Parthenogenesis.

SIGNIFICANCE OF SEXUAL REPRODUCTION, ETC.

PREFACE.

SIGNIFICANCE OF SEXUAL REPRODUCTION, etc.

CONTENTS.

APPENDICES.

V. THE SIGNIFICANCE OF SEXUAL REPRODUCTION IN THE THEORY OF NATURAL SELECTION.

APPENDICES.

ON THE NUMBER OF POLAR BODIES AND THEIR SIGNIFICANCE IN HEREDITY.

PREFACE.

ON THE NUMBER OF POLAR BODIES, &c.

CONTENTS.

VI. ON THE NUMBER OF POLAR BODIES AND THEIR SIGNIFICANCE IN HEREDITY.

I. Parthenogenetic and Sexual Egg.

II. The Significance of the Second Polar Body.

III. The Foregoing Considerations Applied To the Male Germ-Cells.

IV. The Foregoing Considerations applied To Plants.

V. Conclusions with regard to Heredity.

VI. Recapitulation.

VII.

VIII. THE SUPPOSED TRANSMISSION OF MUTILATIONS.

INDEX.

THE END.